freedreno_texture.c revision af69d88d 
1/* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3/*
4 * Copyright (C) 2012 Rob Clark <robclark@freedesktop.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 *    Rob Clark <robclark@freedesktop.org>
27 */
28
29#include "pipe/p_state.h"
30#include "util/u_string.h"
31#include "util/u_memory.h"
32#include "util/u_inlines.h"
33
34#include "freedreno_texture.h"
35#include "freedreno_context.h"
36#include "freedreno_util.h"
37
38static void
39fd_sampler_state_delete(struct pipe_context *pctx, void *hwcso)
40{
41	FREE(hwcso);
42}
43
44static void
45fd_sampler_view_destroy(struct pipe_context *pctx,
46		struct pipe_sampler_view *view)
47{
48	pipe_resource_reference(&view->texture, NULL);
49	FREE(view);
50}
51
52static void bind_sampler_states(struct fd_texture_stateobj *tex,
53		unsigned nr, void **hwcso)
54{
55	unsigned i;
56	unsigned new_nr = 0;
57
58	for (i = 0; i < nr; i++) {
59		if (hwcso[i])
60			new_nr = i + 1;
61		tex->samplers[i] = hwcso[i];
62		tex->dirty_samplers |= (1 << i);
63	}
64
65	for (; i < tex->num_samplers; i++) {
66		tex->samplers[i] = NULL;
67		tex->dirty_samplers |= (1 << i);
68	}
69
70	tex->num_samplers = new_nr;
71}
72
73static void set_sampler_views(struct fd_texture_stateobj *tex,
74		unsigned nr, struct pipe_sampler_view **views)
75{
76	unsigned i;
77	unsigned new_nr = 0;
78
79	for (i = 0; i < nr; i++) {
80		if (views[i])
81			new_nr = i + 1;
82		pipe_sampler_view_reference(&tex->textures[i], views[i]);
83		tex->dirty_samplers |= (1 << i);
84	}
85
86	for (; i < tex->num_textures; i++) {
87		pipe_sampler_view_reference(&tex->textures[i], NULL);
88		tex->dirty_samplers |= (1 << i);
89	}
90
91	tex->num_textures = new_nr;
92}
93
94void
95fd_sampler_states_bind(struct pipe_context *pctx,
96		unsigned shader, unsigned start,
97		unsigned nr, void **hwcso)
98{
99	struct fd_context *ctx = fd_context(pctx);
100
101	assert(start == 0);
102
103	if (shader == PIPE_SHADER_FRAGMENT) {
104		bind_sampler_states(&ctx->fragtex, nr, hwcso);
105		ctx->dirty |= FD_DIRTY_FRAGTEX;
106	}
107	else if (shader == PIPE_SHADER_VERTEX) {
108		bind_sampler_states(&ctx->verttex, nr, hwcso);
109		ctx->dirty |= FD_DIRTY_VERTTEX;
110	}
111}
112
113
114static void
115fd_fragtex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
116		struct pipe_sampler_view **views)
117{
118	struct fd_context *ctx = fd_context(pctx);
119
120	/* on a2xx, since there is a flat address space for textures/samplers,
121	 * a change in # of fragment textures/samplers will trigger patching and
122	 * re-emitting the vertex shader:
123	 */
124	if (nr != ctx->fragtex.num_textures)
125		ctx->dirty |= FD_DIRTY_TEXSTATE;
126
127	set_sampler_views(&ctx->fragtex, nr, views);
128	ctx->dirty |= FD_DIRTY_FRAGTEX;
129}
130
131static void
132fd_verttex_set_sampler_views(struct pipe_context *pctx, unsigned nr,
133		struct pipe_sampler_view **views)
134{
135	struct fd_context *ctx = fd_context(pctx);
136	set_sampler_views(&ctx->verttex, nr, views);
137	ctx->dirty |= FD_DIRTY_VERTTEX;
138}
139
140static void
141fd_set_sampler_views(struct pipe_context *pctx, unsigned shader,
142                     unsigned start, unsigned nr,
143                     struct pipe_sampler_view **views)
144{
145   assert(start == 0);
146   switch (shader) {
147   case PIPE_SHADER_FRAGMENT:
148      fd_fragtex_set_sampler_views(pctx, nr, views);
149      break;
150   case PIPE_SHADER_VERTEX:
151      fd_verttex_set_sampler_views(pctx, nr, views);
152      break;
153   default:
154      ;
155   }
156}
157
158void
159fd_texture_init(struct pipe_context *pctx)
160{
161	pctx->delete_sampler_state = fd_sampler_state_delete;
162
163	pctx->sampler_view_destroy = fd_sampler_view_destroy;
164
165	pctx->set_sampler_views = fd_set_sampler_views;
166}
167